Improvement in stump-extractors



D. A. DNFOlfTH.4 STUMP BXTRAGTOR.

No. 41,490. Patented Feb.9, 1864.

UNITED STATES D. A. DANFORTH, ory ELKHAR'I, INDIANA.

IMPROVEMENT IN STUM P-EXVTRACTORS.

YSpecification forming part of Letters Patent No. 41,490, dated February. 9, 1864.

.To all whom it may concern.-

Be it known that I, D. A. DANFOR'IH, of Elkhart, in the county of Elkhart and State of Indiana, have invented a new and useful Mach-ine forthePurposeof Extracting Stumps andGrubs; and I do hereby declare that the following is a clear and exact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 is a side elevation, with the nearest wheel, L, nearest4 brace, N, and aportion of the lever A removed to show the action of v the catch Z and guide `O upon the ratchet K on the farther wheel, L. Fig. 2 is afront elevation; Fig. 3, a plan, side, and section of the axle M, showing the shape of the core, the anges Q Q, and ribs R and S; Fig. 4, the shape of the bite I and mode of attaching it to` the leverl F; Fig. 5,'the saddle J (front and side) to support the chain W; Fig. 6, the hooked binder, showing the edge drawn for ward at X; and Fig. 7 a section of the ratchet K, showing the iiange to receive the hook or guide and the relative position of the stud 7 with the bolt 1, also by the dotted lines, the notch in the top of 0, and the lug on top of brace N to receive a key at P.

The same letters refer to like parts.

rI he auxiliary lever A A may he either single, as shown in the drawings, to pass between the levers F F, or double to pass on the outside. This lever is to increase the power of the machine. The levers F F are bolted to the anges Q Q of the axle M, between the ribs R and S. The ratchet K is made with a ange on the inner side, Fig. 7 to receive the hook or guide O, on which the guide O can freely slide, but yet will keep the lever N and lcatch Z in their proper position with respect to thc ratchet K when the machine is worn by use. The ratchet K has also studs at the side of each bolt 7, Fig. 7, to assist the bolts in keeping the ratchet from turning on the wheel L. lIhe braces N N have their ends turned down at right angles to form the catches Z Z, so that they will act upon the ratchet-teeth in either direction to assist in rolling the machine up to the stump or tree and keeping the machine in position for adjustment.

With the Llkhart grubber, patented by myself and Wm. A. Wilkinson, July 2, 1861,

there is often much diiculty in getting the machine up to the grub to be pulled, on ac count of the ground rising generally about the roots, and it requires an additional man to get the machine in place and keep it'there, and to put the braces in the cogs,while the catches Z Z in this machine, guided and supported with the guides O O, will fall into the teeth of K when the lever F is raised to an angle of forty-five degrees, and will hold the wheels and turn them closer to the grub or stump as the lever'is brought to the proper' position, 'as in Figs. 1 and 2, for bitching,

.making it easy for one man to operate'the machine in place of requiring two.

The hooks vor guides O O are attached to N N by passing doveta-iled between ings on the sides N N, and are keyed at the top through a notch at P. This hook or guide 0 should be turned up sutiiciently far behind the Ilange of K that it will not come by the iiange when the catch Z is in the bottom of the cogs or teeth. The hook O, in addition` to being a guide for the catch Z, is also tosupport the brace N when the lever F is turned forward in a horizontal position, as when the machine is being removed from place to pla-ce, and also to keep the brace N from catchingin the ground when it runs backward. The core or hollow through the axle M is of variable size, lso that the maximum strength of metal to resist the strain at the different points may be had in combination with minimum weight of metal for the whole axle. The shape of the core I use is shown by the dotted lines on plan of Fig. 3. I make the core between the anges Q Q, andforabout one and a half inches on each side, of the same size as at the ends of the axle, and from there to the inner edges of the wheels L L, so that the metal will be about three-fourths of an inch thick, and thence tapering to either end, but do not confine myself to that particular size or proportion. The edge of the hooked binder, Fig. 6, is drawn forward at X to give it such shape that it will not slipoi' the grub when the bark is loose from the circulation of the sap, as the hook will that is used in Patent No. 1,680, referred to heretofore.

In using this machine for pulling large stumps or trees it is rolled against the stump or tree to be pulled with the lever A removed and the lever F turned forward in a horizon the axle M, and over the saddle J,or its equiva lent, to and about the root.- The lever A is thenplaced in position, with the large lend either on a horse or trestle, E,.or some other support, and the stirrup B upon it back of the Alever F. The chain D is hooked to the stirrup B and attached to the root with the chain W. The rope Y is attached to the pulley-block at V and up around the pulley at I, back around V, and thence to the team.

The number of pulleys used and Stringing the rope depends upon the power required. The action of the combination of levers and mechanism is that thelever F is drawn forward, acting on the stump or tree with the axle M and the saddle J -as points of leverage, while at the same time the lever. A rises and acts on the snpportE as axfnlcrum.

In drawing small stumps the lever A and chain W are not used, and the hook V' is hooked into. the ring V" on lever F, or the hole 8 in the top -ot' flange Q, and the team ldraws directly from .the pulley T. In this case the hooked binder, Fig. 6, is passed around vthe stump and hung over the axle M, onleach side of F, bringing the stump between the edge X of the binder and the bite I, and

`,the stump is raised with the bite I and bottom of the wheels L L as points of leverage, the wheels-being locked with Z Z.

What I- claim as my invention isv 1. 'lhe combination Aof the levers A and F, hook C, pulley-block U, and stirrup B, for the purpose and in the manner described.

2. 'lhe combination of the saddle J, chain W, and lever F, in the manner and for the pnrposehe-rein described.

3. The combination vof the hook or guide O and brace N with iiange on 'inner side ot'- ratchet K and lever F, for the purpose herein described. I

4. The combination of the flange Q Q and' ribs R S, in com b nation `with the axle M and lever F, for the purpose herein described.

- D, A. DANFORTHL lVitnesses: S. C.'KELsY,

W. W. DINsMoRn. 

